The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Jan. 18, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Gopichandra Surnilla, West Bloomfield, MI (US);
Richard E. Soltis, Saline, MI (US);
Timothy Schram, Troy, MI (US);
Timothy Joseph Clark, Livonia, MI (US);
Evangelos Skoures, Detroit, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F02M 25/06 (2006.01); G01M 15/00 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
F01N 11/007 (2013.01);
Abstract
Various methods and system are described for determining ambient humidity via an exhaust gas sensor disposed in an exhaust system of an engine. In one example, a reference voltage of the sensor is modulated between a first and second voltage during non-fueling conditions of the engine. The ambient humidity is determined based on an average change in pumping current while the voltage is modulated.